Ascochyta pulcherrima Saccardo & Roumeguère, 1882
on Philadelphus
parasite
Causes sharply delimited amphigenous leaf spots; initially small, but later confluent and then occupying most of the leaf and centrally perforate. Pycnidia epiphyllous, dark brown. Conidia 3 X 6-7 µm, biguttulate.
host plants
Hydrangeaceae, monophagous
Philadelphus coronarius.
distribution within Europe
synonyms
Phyllosticta vulgaris var. philadelphi Desmazières & Roberge, 1949.
references
Cejp (1965a [“Phyllosticta vulgaris var. philadelphi Saccardo, 1994″]).